{"product_id":"oem-lennox-100679-66-thermal-expansion-valve-5-ton-r410a-17g77","title":"OEM Lennox 100679-66 Thermal Expansion Valve 5 Ton R410A — 17G77","description":"\u003cp\u003eThe \u003cstrong\u003eLennox 17G77\u003c\/strong\u003e, also identified as OEM part number 100679-66, is a genuine thermal expansion valve (TXV) rated for 5-ton R410A cooling-only applications without an integrated check valve, designed specifically for compatible Lennox air conditioning systems. A failing TXV can cause symptoms such as poor cooling performance, frost buildup on the evaporator coil, inconsistent superheat readings, or the system short-cycling. This direct OEM replacement ensures accurate refrigerant metering and optimal system efficiency for your Lennox cooling equipment.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081016263027,"sku":"LNX-17G77","price":59.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-100679-66-thermal-expansion-valve-5-ton-r410a-17g77","provider":"National HVAC Parts","version":"1.0","type":"link"}